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423 Area Code Information

State: TN

Largest City in Area: CHATTANOOGA

Where is Area Code 423? Area code (423) is in the state of TN. The PeopleSearchNow database has 3,870,409 records on file with a phone number in the area code of (423). Below, are the major cities in the area code (423).

Major Cities in 423

  • CHATTANOOGA, TN (798,598)
  • JOHNSON CITY, TN (345,336)
  • KNOXVILLE, TN (326,804)
  • KINGSPORT, TN (317,353)
  • CLEVELAND, TN (303,479)
  • HIXSON, TN (229,209)
  • MORRISTOWN, TN (169,598)
  • BRISTOL, TN (146,860)
  • GREENEVILLE, TN (144,946)
  • OOLTEWAH, TN (141,202)

Zip Codes in 423

  • 37311
  • 37312
  • 37323
  • 37343
  • 37363
  • 37379
  • 37405
  • 37411
  • 37412
  • 37415
  • 37416
  • 37421
  • 37601
  • 37604
  • 37620
  • 37643
  • 37659
  • 37660
  • 37664
  • 37814